The Big 12's 2023 football schedule was supposed to be out a month ago. Then it was going to be a week or two late.
No word since then (as far as I know) on when it might be published.
A major sticking point, per OKC sports media, still seems to be about OU and UT, after joining the SEC, playing away games vs. at least some of the remaining Big 12 members to make up for those programs' lost gate revenue.